1 /*- 2 * Based on BSD-licensed source modules in the Linux iwlwifi driver, 3 * which were used as the reference documentation for this implementation. 4 * 5 * Driver version we are currently based off of is 6 * Linux 4.7.3 (tag id d7f6728f57e3ecbb7ef34eb7d9f564d514775d75) 7 * 8 *********************************************************************** 9 * 10 * This file is provided under a dual BSD/GPLv2 license. When using or 11 * redistributing this file, you may do so under either license. 12 * 13 * GPL LICENSE SUMMARY 14 * 15 * Copyright(c) 2012 - 2015 Intel Corporation. All rights reserved. 16 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 17 * Copyright(c) 2016 Intel Deutschland GmbH 18 * 19 * This program is free software; you can redistribute it and/or modify 20 * it under the terms of version 2 of the GNU General Public License as 21 * published by the Free Software Foundation. 22 * 23 * This program is distributed in the hope that it will be useful, but 24 * WITHOUT ANY WARRANTY; without even the implied warranty of 25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 26 * General Public License for more details. 27 * 28 * You should have received a copy of the GNU General Public License 29 * along with this program; if not, write to the Free Software 30 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, 31 * USA 32 * 33 * The full GNU General Public License is included in this distribution 34 * in the file called COPYING. 35 * 36 * Contact Information: 37 * Intel Linux Wireless <linuxwifi@intel.com> 38 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 39 * 40 * BSD LICENSE 41 * 42 * Copyright(c) 2012 - 2015 Intel Corporation. All rights reserved. 43 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 44 * Copyright(c) 2016 Intel Deutschland GmbH 45 * All rights reserved. 46 * 47 * Redistribution and use in source and binary forms, with or without 48 * modification, are permitted provided that the following conditions 49 * are met: 50 * 51 * * Redistributions of source code must retain the above copyright 52 * notice, this list of conditions and the following disclaimer. 53 * * Redistributions in binary form must reproduce the above copyright 54 * notice, this list of conditions and the following disclaimer in 55 * the documentation and/or other materials provided with the 56 * distribution. 57 * * Neither the name Intel Corporation nor the names of its 58 * contributors may be used to endorse or promote products derived 59 * from this software without specific prior written permission. 60 * 61 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 62 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 63 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 64 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 65 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 66 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 67 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 68 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 69 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 70 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 71 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 72 * 73 *****************************************************************************/ 74 75 #include <sys/cdefs.h> 76 __FBSDID("$FreeBSD$"); 77 78 #include "opt_wlan.h" 79 #include "opt_iwm.h" 80 81 #include <sys/param.h> 82 #include <sys/bus.h> 83 #include <sys/conf.h> 84 #include <sys/endian.h> 85 #include <sys/firmware.h> 86 #include <sys/kernel.h> 87 #include <sys/malloc.h> 88 #include <sys/mbuf.h> 89 #include <sys/mutex.h> 90 #include <sys/module.h> 91 #include <sys/proc.h> 92 #include <sys/rman.h> 93 #include <sys/socket.h> 94 #include <sys/sockio.h> 95 #include <sys/sysctl.h> 96 #include <sys/linker.h> 97 98 #include <machine/bus.h> 99 #include <machine/endian.h> 100 #include <machine/resource.h> 101 102 #include <dev/pci/pcivar.h> 103 #include <dev/pci/pcireg.h> 104 105 #include <net/bpf.h> 106 107 #include <net/if.h> 108 #include <net/if_var.h> 109 #include <net/if_arp.h> 110 #include <net/if_dl.h> 111 #include <net/if_media.h> 112 #include <net/if_types.h> 113 114 #include <netinet/in.h> 115 #include <netinet/in_systm.h> 116 #include <netinet/if_ether.h> 117 #include <netinet/ip.h> 118 119 #include <net80211/ieee80211_var.h> 120 #include <net80211/ieee80211_regdomain.h> 121 #include <net80211/ieee80211_ratectl.h> 122 #include <net80211/ieee80211_radiotap.h> 123 124 #include <dev/iwm/if_iwmreg.h> 125 #include <dev/iwm/if_iwmvar.h> 126 #include <dev/iwm/if_iwm_config.h> 127 #include <dev/iwm/if_iwm_debug.h> 128 #include <dev/iwm/if_iwm_constants.h> 129 #include <dev/iwm/if_iwm_util.h> 130 #include <dev/iwm/if_iwm_mac_ctxt.h> 131 #include <dev/iwm/if_iwm_sta.h> 132 133 /* 134 * New version of ADD_STA_sta command added new fields at the end of the 135 * structure, so sending the size of the relevant API's structure is enough to 136 * support both API versions. 137 */ 138 static inline int 139 iwm_mvm_add_sta_cmd_size(struct iwm_softc *sc) 140 { 141 #ifdef notyet 142 return iwm_mvm_has_new_rx_api(mvm) ? 143 sizeof(struct iwm_mvm_add_sta_cmd) : 144 sizeof(struct iwm_mvm_add_sta_cmd_v7); 145 #else 146 return sizeof(struct iwm_mvm_add_sta_cmd); 147 #endif 148 } 149 150 /* send station add/update command to firmware */ 151 int 152 iwm_mvm_sta_send_to_fw(struct iwm_softc *sc, struct iwm_node *in, 153 boolean_t update) 154 { 155 struct iwm_vap *ivp = IWM_VAP(in->in_ni.ni_vap); 156 struct iwm_mvm_add_sta_cmd add_sta_cmd = { 157 .sta_id = IWM_STATION_ID, 158 .mac_id_n_color = 159 htole32(IWM_FW_CMD_ID_AND_COLOR(ivp->id, ivp->color)), 160 .add_modify = update ? 1 : 0, 161 .station_flags_msk = htole32(IWM_STA_FLG_FAT_EN_MSK | 162 IWM_STA_FLG_MIMO_EN_MSK), 163 .tid_disable_tx = htole16(0xffff), 164 }; 165 int ret; 166 uint32_t status; 167 uint32_t agg_size = 0, mpdu_dens = 0; 168 169 if (!update) { 170 int ac; 171 for (ac = 0; ac < WME_NUM_AC; ac++) { 172 add_sta_cmd.tfd_queue_msk |= 173 htole32(1 << iwm_mvm_ac_to_tx_fifo[ac]); 174 } 175 IEEE80211_ADDR_COPY(&add_sta_cmd.addr, in->in_ni.ni_bssid); 176 } 177 178 add_sta_cmd.station_flags |= 179 htole32(agg_size << IWM_STA_FLG_MAX_AGG_SIZE_SHIFT); 180 add_sta_cmd.station_flags |= 181 htole32(mpdu_dens << IWM_STA_FLG_AGG_MPDU_DENS_SHIFT); 182 183 status = IWM_ADD_STA_SUCCESS; 184 ret = iwm_mvm_send_cmd_pdu_status(sc, IWM_ADD_STA, 185 iwm_mvm_add_sta_cmd_size(sc), 186 &add_sta_cmd, &status); 187 if (ret) 188 return ret; 189 190 switch (status & IWM_ADD_STA_STATUS_MASK) { 191 case IWM_ADD_STA_SUCCESS: 192 IWM_DPRINTF(sc, IWM_DEBUG_NODE, "IWM_ADD_STA PASSED\n"); 193 break; 194 default: 195 ret = EIO; 196 device_printf(sc->sc_dev, "IWM_ADD_STA failed\n"); 197 break; 198 } 199 200 return ret; 201 } 202 203 int 204 iwm_mvm_add_sta(struct iwm_softc *sc, struct iwm_node *in) 205 { 206 return iwm_mvm_sta_send_to_fw(sc, in, FALSE); 207 } 208 209 int 210 iwm_mvm_update_sta(struct iwm_softc *sc, struct iwm_node *in) 211 { 212 return iwm_mvm_sta_send_to_fw(sc, in, TRUE); 213 } 214 215 int 216 iwm_mvm_drain_sta(struct iwm_softc *sc, struct iwm_vap *ivp, boolean_t drain) 217 { 218 struct iwm_mvm_add_sta_cmd cmd = {}; 219 int ret; 220 uint32_t status; 221 222 cmd.mac_id_n_color = 223 htole32(IWM_FW_CMD_ID_AND_COLOR(ivp->id, ivp->color)); 224 cmd.sta_id = IWM_STATION_ID; 225 cmd.add_modify = IWM_STA_MODE_MODIFY; 226 cmd.station_flags = drain ? htole32(IWM_STA_FLG_DRAIN_FLOW) : 0; 227 cmd.station_flags_msk = htole32(IWM_STA_FLG_DRAIN_FLOW); 228 229 status = IWM_ADD_STA_SUCCESS; 230 ret = iwm_mvm_send_cmd_pdu_status(sc, IWM_ADD_STA, 231 iwm_mvm_add_sta_cmd_size(sc), 232 &cmd, &status); 233 if (ret) 234 return ret; 235 236 switch (status & IWM_ADD_STA_STATUS_MASK) { 237 case IWM_ADD_STA_SUCCESS: 238 IWM_DPRINTF(sc, IWM_DEBUG_NODE, 239 "Frames for staid %d will drained in fw\n", IWM_STATION_ID); 240 break; 241 default: 242 ret = EIO; 243 device_printf(sc->sc_dev, 244 "Couldn't drain frames for staid %d\n", IWM_STATION_ID); 245 break; 246 } 247 248 return ret; 249 } 250 251 /* 252 * Remove a station from the FW table. Before sending the command to remove 253 * the station validate that the station is indeed known to the driver (sanity 254 * only). 255 */ 256 static int 257 iwm_mvm_rm_sta_common(struct iwm_softc *sc) 258 { 259 struct iwm_mvm_rm_sta_cmd rm_sta_cmd = { 260 .sta_id = IWM_STATION_ID, 261 }; 262 int ret; 263 264 ret = iwm_mvm_send_cmd_pdu(sc, IWM_REMOVE_STA, 0, 265 sizeof(rm_sta_cmd), &rm_sta_cmd); 266 if (ret) { 267 device_printf(sc->sc_dev, 268 "Failed to remove station. Id=%d\n", IWM_STATION_ID); 269 return ret; 270 } 271 272 return 0; 273 } 274 275 int 276 iwm_mvm_rm_sta(struct iwm_softc *sc, struct ieee80211vap *vap, 277 boolean_t is_assoc) 278 { 279 uint32_t tfd_queue_msk = 0; 280 int ret; 281 int ac; 282 283 ret = iwm_mvm_drain_sta(sc, IWM_VAP(vap), TRUE); 284 if (ret) 285 return ret; 286 mbufq_drain(&sc->sc_snd); /* XXX needed ? */ 287 for (ac = 0; ac < WME_NUM_AC; ac++) { 288 tfd_queue_msk |= htole32(1 << iwm_mvm_ac_to_tx_fifo[ac]); 289 } 290 ret = iwm_mvm_flush_tx_path(sc, tfd_queue_msk, 0); 291 if (ret) 292 return ret; 293 #ifdef notyet /* function not yet implemented */ 294 ret = iwl_trans_wait_tx_queue_empty(mvm->trans, 295 mvm_sta->tfd_queue_msk); 296 if (ret) 297 return ret; 298 #endif 299 ret = iwm_mvm_drain_sta(sc, IWM_VAP(vap), FALSE); 300 301 /* if we are associated - we can't remove the AP STA now */ 302 if (is_assoc) 303 return ret; 304 305 /* XXX wait until STA is drained */ 306 307 ret = iwm_mvm_rm_sta_common(sc); 308 309 return ret; 310 } 311 312 int 313 iwm_mvm_rm_sta_id(struct iwm_softc *sc, struct ieee80211vap *vap) 314 { 315 /* XXX wait until STA is drained */ 316 317 return iwm_mvm_rm_sta_common(sc); 318 } 319 320 static int 321 iwm_mvm_add_int_sta_common(struct iwm_softc *sc, struct iwm_int_sta *sta, 322 const uint8_t *addr, uint16_t mac_id, uint16_t color) 323 { 324 struct iwm_mvm_add_sta_cmd cmd; 325 int ret; 326 uint32_t status; 327 328 memset(&cmd, 0, sizeof(cmd)); 329 cmd.sta_id = sta->sta_id; 330 cmd.mac_id_n_color = htole32(IWM_FW_CMD_ID_AND_COLOR(mac_id, color)); 331 332 cmd.tfd_queue_msk = htole32(sta->tfd_queue_msk); 333 cmd.tid_disable_tx = htole16(0xffff); 334 335 if (addr) 336 IEEE80211_ADDR_COPY(cmd.addr, addr); 337 338 ret = iwm_mvm_send_cmd_pdu_status(sc, IWM_ADD_STA, 339 iwm_mvm_add_sta_cmd_size(sc), 340 &cmd, &status); 341 if (ret) 342 return ret; 343 344 switch (status & IWM_ADD_STA_STATUS_MASK) { 345 case IWM_ADD_STA_SUCCESS: 346 IWM_DPRINTF(sc, IWM_DEBUG_NODE, "Internal station added.\n"); 347 return 0; 348 default: 349 ret = EIO; 350 device_printf(sc->sc_dev, 351 "Add internal station failed, status=0x%x\n", status); 352 break; 353 } 354 return ret; 355 } 356 357 int 358 iwm_mvm_add_aux_sta(struct iwm_softc *sc) 359 { 360 int ret; 361 362 sc->sc_aux_sta.sta_id = IWM_AUX_STA_ID; 363 sc->sc_aux_sta.tfd_queue_msk = (1 << IWM_MVM_AUX_QUEUE); 364 365 /* Map Aux queue to fifo - needs to happen before adding Aux station */ 366 ret = iwm_enable_txq(sc, 0, IWM_MVM_AUX_QUEUE, IWM_MVM_TX_FIFO_MCAST); 367 if (ret) 368 return ret; 369 370 ret = iwm_mvm_add_int_sta_common(sc, &sc->sc_aux_sta, NULL, 371 IWM_MAC_INDEX_AUX, 0); 372 373 if (ret) { 374 memset(&sc->sc_aux_sta, 0, sizeof(sc->sc_aux_sta)); 375 sc->sc_aux_sta.sta_id = IWM_MVM_STATION_COUNT; 376 } 377 return ret; 378 } 379 380 void iwm_mvm_del_aux_sta(struct iwm_softc *sc) 381 { 382 memset(&sc->sc_aux_sta, 0, sizeof(sc->sc_aux_sta)); 383 sc->sc_aux_sta.sta_id = IWM_MVM_STATION_COUNT; 384 } 385